I don't know why, but for some strange reason my 5 year old Power Mac G5 2.0 Ghz runs better than my brand new iMac C2D 2.4 Ghz. 5 years is a long time is the technology world, and I don't see any gains. Maybe the G5 was ahead of its time? Don't get me wrong the new iMac is speedy, but my good old Power Mac runs better. I can leave the thing on for a week and no issues. On the other hand, with my iMac I'll put it to sleep every night and restart it more often. Who knows maybe its all in my head, or maybe its the fact that I have 6.5gb RAM in my power mac and only 1gb ram in my imac.